Melin Brynkir Woollen Mill is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 29 May 1968. Mill. 2 related planning applications.

Melin Brynkir Woollen Mill

WRENN ID
sunken-baluster-ochre
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
29 May 1968
Type
Mill
Address
Melin Brynkir Woollen Mill, 3 Castle Square, Caernarfon, LL55 2NF
OS grid reference
SH 478 627
Coordinates
53.13979, -4.27542
Source
Cadw listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a three-storey house and shop, forming part of a terrace. It dates to the 18th century and is built of roughcast, with a slate roof and a brick end stack on the left. There are sixteen-pane hornless sash windows on the middle floor, and similar twelve-pane windows above. The lower floor contains a shop front added in the late 19th century, featuring plain pilasters and fascia, a plate glass window with thin mahogany posts, and diaper tilework at the recessed entrance, where the original door has been replaced. The stall board is painted over.

The angle on the left-hand side is rounded. The left-hand gable end has a tall, narrow, small-pane sash window illuminating the staircase, with a small attic sash window above. To its left, there are further hornless sash windows, with sixteen panes in the lower and middle floors, and twelve panes in the upper floor. Basement openings are boarded up. The rear of the main section is built of rubble stone.

A lower two-storey and basement rear wing, facing Greengate Street, has sash windows: a twelve-pane window in the upper left corner, and a sixteen-pane window below. A window in the lower storey has replaced a former doorway; external rendered steps with iron railings lead to this window (as shown on the 1888 Ordnance Survey). A boarded-up basement door sits on the lower left, with a small-pane window to its right.

A further, slightly lower wing, built of rubble stone, is attached. It incorporates inserted garage doors facing Tan y Bont at basement level, a horned sash window in the lower storey beneath a shallow brick segmental head, and a vented opening below the eaves. The rear gable end is rendered.

Local climate

Melin Brynkir Woollen Mill sits in one of the wettest parts of the UK, with an average of 1,370 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 20 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 1 transaction since 2005
  • Related listed building consents — 2 applications
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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